Building SemaKazi Part 2: Starting the Frontend, No Framework Required

Phase 1 of SemaKazi (a verified reputation platform for Kenya's informal-sector workers —...


I spent a week making my repo actually contributable, and the issue tracker did more than the code

I maintain a Python download manager. A week ago it had 1,500 stars and zero outside contributors....


GitAscii: A Visual Editor for GitHub Profile READMEs

How GitAscii combines a visual editor, live GitHub data, and dynamic SVGs to create maintainable GitHub profiles.


I Turned Your GitHub Profile Into a Detective Case File (And the Verdict Might Hurt)

Your GitHub profile is a public confession booth.  Repos count. Followers. That bio you wrote at 1...


Building in Public: What 60 Days of Coding Taught Me (And Why I Shared My GitHub)

A candid reflection on taking on a build challenge, pushing code out in the open, and navigating the messy reality of software development.


GitHub Actions for Unity: The GameCI Setup and the Runner Minutes Trap

Skipping the "what is CI/CD" intro — if you're on dev.to you already know. The Unity-specific part...


Building SemaKazi Part 1: Shipping a Backend the Way Real Teams Do It

Kenya has one of the youngest populations in the world, and most of that workforce works in the...


7 Best Trello Alternatives for Small Dev Teams (2026)

Trello is where most small teams start, and for a while it's enough: cards, columns, drag, done. The...

webdev projectmanagement github productivity

webdev, projectmanagement, github, productivity


Nova: Your friendly and not-so-average extraterrestrial life coach.

Long time no see. Many of you guys here at Dev.to might have forgotten me, as I was pretty much...


Publish an agent run as a playable Story from GitHub Actions

Agent runs are usually reviewed as raw logs after the fact. That works for debugging, but it is weak...


Every pull request gets its own app and its own Postgres branch, for $0

Every place I've worked plumbed everything to one shared dev environment. One database, one deploy,...


Mobile AI Pair Programming: Managing 50+ GitHub Repositories on the Go   Building software...


How to Monetize Your GitHub Profile in 2025   tags: github, money, career,...


I Gave an AI Agent Nightly Merge Rights to Every Repo I Own (With a Budget and a Kill Switch)

I run about twenty production and support repos by myself — a content site with a curated data feed,...


How to Run Async Standups From Your GitHub Activity

Cross-posted from the Kahoona blog, where I write about how small dev teams stay in sync.  The daily...


Opened the project for everyone in [GitHub](https://github.com/mblancodev/learn-by-play)

I built a free learning platform because I was tired of scattered, paywalled resources. Now I...


I Stopped Trusting npm install, So I Built a Pre-Clone GitHub Security Scanner

We trust open source every single day. Every time we clone a repository, we usually do something like...

cybersecurity github opensource security

cybersecurity, github, opensource, security


Looking for 3 tiny first PRs around WordPress/Gutenberg image placement

Pictovap is looking for 3 tiny first PRs around WordPress/Gutenberg image placement.  No API keys, no...


Hi all. Frontend dev by day, lately been building GitHub Actions to make code review less manual. Curious what tooling everyone here can't live without.

A post by Vivek Kumar


How to turn a GitHub README into a demo video (without hiring an editor)

Your README already contains the script. Here's the approach that turns it into a watchable 60-second...


How I Connected Claude Cowork to My Local Machine

I've been using Claude Cowork a lot, and it has genuinely changed how I work.  It can understand my...


GitHub Copilot Skills Deep Dive: The Missing Layer Between Prompts, Instructions, and Agents https://blog.msdevbuild.com/blog/github-copilot-skills-deep-dive/


My 06:30 cron has never once started at 06:30

I keep a public repo whose only job is to watch how GitHub Actions treats schedule: triggers. 18...

devops, githubactions, github, monitoring


Replicating GitLab's Centralized CI/CD Pipeline in GitHub Using a Central Repository to Avoid Duplication

Introduction   Transitioning from GitLab’s centralized CI/CD pipeline structure to GitHub...


"Carry Actor Provenance From Linear UI to Worker"

"A typed provenance envelope prevents delegated cloud-agent work from losing identity between UI, API, queue, and worker."


"Test Mobile CI Repair Across Backgrounding and Reconnect"

"A device matrix and reconciliation oracle test phone-to-cloud-agent CI repair under mobile lifecycle failures."


"Show Agent Confidence Without Making It Look Like Permission"

"A semantic confidence card separates rationale from authorization and tests stale, keyboard, and screen-reader states."


How to Monitor AWS Lambda Functions with Vigilmon (Complete Guide)

AWS Lambda functions are serverless — but they still fail. Cold starts, timeouts, memory limits, and...


AWS Lambda with Spring Boot and SnapStart: Killing the JVM Cold Start

The JVM cold start pushed many Java teams away from Lambda. SnapStart, CRaC, and priming change that — here's how to run Spring Boot on Lambda with near-instant starts, with working code and the gotchas nobody warns you about.


A 7am Report on My Short-Term Rental

This is what 7am looks like:    Who's in which room, when they check out, how much battery the front...


Connection Pooling in the Serverless Era: Five Failure Modes

Your database CPU is at 20%. Your slowest query is 12ms. Your slow-query log is empty. And your p99...

postgres database serverless performance

postgres, database, serverless, performance


AWS Daily Digest — August 02, 2026

☁ AWS Daily Digest · August 02, 2026 Auto-generated · Groq (Llama 3.3 70B) · Free &...


Day 12/30 AWS System Design Patterns

A document processing pipeline runs as an AWS Step Functions Standard workflow (serverless workflow...

eventdriven aws serverless distributedsystems

eventdriven, aws, serverless, distributedsystems


AWS Lambda and NestJS: Communication between services

In this guide, we’ll speak about communication in a distributed system using AWS Lambda and...


Evaluating Pinecone, Milvus, and Weaviate for GDPR-Compliant Serverless Vector Search in Generative AI Platforms

Evaluating Pinecone, Milvus, and Weaviate for GDPR-Compliant Serverless Vector Search in...


How I Built a Flat-Rate Reverse Geocoding API for Japan to Escape Google Maps Bill Shock

If you've ever built a global app or travel tool operating in Japan, you know the struggle:    Google...


"Why did my AWS deploy break with zero code changes?"

A CI run that was green last week is red today and nobody touched main. Most of the time this is a calendar cutoff, not a bug — here's how to tell which one hit you and where the non-calendar causes hide.


I turned 100k county property records into a free "instant comps" tool

Commercial real estate has a data problem for the little guy: the good comps live behind...


Stop Wasting Money on Lambda: Automate Right-Sizing Across Your AWS Account

The Silent Cost Leak Nobody Talks About   You know that feeling when you discover a Lambda...


Securing Azure Functions: Use Managed Identities Over Connection Strings

How to secure Azure Functions without connection strings. A practical guide to connecting Storage Accounts using Managed Identities and Azure RBAC.


Day 9/30 AWS System Design Patterns

A lending platform runs its loan approval workflow as a Lambda durable function (Lambda's...

aws serverless systemdesign distributedsystems

aws, serverless, systemdesign, distributedsystems


Your database scales to zero. Your retry loop doesn't know that.

A scale-to-zero Postgres branch fails the first query while its compute wakes. Instant retries replay the cold connection. The fix: back off the DB stage, not the LLM stages.


"[DEP0040] DeprecationWarning: The `punycode` module is deprecated — what to do about it on Node.js 22 Lambda"

Node.js 22 Lambda logs are suddenly full of DEP0040 punycode warnings. Where they come from, why they get loud on a runtime upgrade, and the actual fix (it's not your code).


Build a Serverless Python App on AWS Lambda   tags: python, aws, serverless,...


Handling complexity in lambda functions

How middleware can tame the complexity of AWS Lambda functions by isolating business logic from cross cutting concerns, and a look at Lambcycle, a declarative middleware built around a configurable event cycle.


Python + AWS Lambda: Build Serverless Apps for Free   tags: python, aws, serverless,...


Cloudagotchi Part 3 : It gets hungry while you sleep: A serverless pet brain

Lambda decides, DynamoDB remembers, EventBridge Scheduler makes time pass. My ESP32 Tamagotchi finally has feelings... and consequences for ignoring it.


Generate invoice PDFs without a headless browser

Puppeteer/Chromium is overkill for document PDFs. Generate invoice and receipt PDFs from JSON with no headless browser — faster, no cold starts, free to host.


Exploring WebAssembly Beyond the Browser: A Cloud Architect's First Look at WASI

For years, my day job has centered on enterprise cloud backends built around containers, which are...

webassembly serverless programming devops

webassembly, serverless, programming, devops


AWS Daily Digest — July 27, 2026

☁ AWS Daily Digest · July 27, 2026 Auto-generated · Groq (Llama 3.3 70B) · Free &...


Adding a File Portal to FSx for ONTAP S3 Access Points — Choosing Between Amplify Gen2 and Nextcloud (Part 1)

Reaching NFS/SMB files from a browser and from AI without moving the data. Comparing Amplify Gen2 and Nextcloud on one FSx for ONTAP S3 Access Point.

Yoshiki Fujiwara(藤原 善基)@AWS Community Builder


How to Monitor Your Deno Deploy Application with Vigilmon   Deno Deploy is a globally...

deno, monitoring, serverless, typescript


AWS serverless integration testing in 2026: 3 local setups that actually work   Summary. Two...


Monitoring Neon Serverless Postgres with Vigilmon (Free External Health Checks)   Neon is a...


How to Monitor Cloudflare Workers with Vigilmon (Free External Uptime Checks)

Cloudflare Workers run at the edge — across 300+ data centers globally — which makes traditional...

cloudflare, serverless, webdev, monitoring


Embedding Storage Operations into a File Portal — From ARP/AI Incident Response to Regulatory Retention Management (Part 2)

Driving ransomware detection, containment, immutable snapshots and audit-log review from a browser, on top of ONTAP ARP/AI and SnapLock.


Building a Serverless Video Thumbnail API with Cloudflare Workers

How I moved thumbnail resizing off a PHP/LiteSpeed origin to a Cloudflare Worker: HMAC-signed URLs,


How to Monitor AWS Lambda and Cloudflare Workers with Vigilmon (Serverless Uptime Monitoring)

Serverless functions are powerful but harder to monitor than traditional servers. AWS Lambda,...


How to Monitor AWS Lambda Functions with Uptime Monitoring   AWS Lambda functions are often...


FFmpeg on Firebase Cloud Functions: Why It Breaks (and the Fix)

Originally published at ffmpeg-micro.com  You're adding video processing to a Firebase app. You...


Day 5/30 AWS System Design Patterns

A checkout API runs on Lambda (serverless compute, Node.js, 1,024 MB, attached to a VPC for RDS...


$1 per million events: what event-driven architecture really costs in 2026   Summary. Amazon...

aws, eventbridge, serverless, architecture


Why I Built a Security Scanner That Never Touches the Target

A client asked me to build a "quick security check" tool for their agency's lead generation funnel,...


Building Low-Cost Edge Infrastructure for AI Tools on Cloudflare Workers

As more indie builders launch lightweight AI applications, edge serverless platforms become a...

cloudflarechallenge workers serverless indiedev

cloudflarechallenge, workers, serverless, indiedev


Experiment: Ruby on Vercel (an odyssey)

(cover image generated with Google Gemini)           What / Why   As the title says, this is just an...


Day 4/30 AWS System Design Patterns

A machine learning platform runs inference workloads on ECS (Elastic Container Service — managed...

aws, awschallenge, serverless, containers


Log Analytics (The "Observability") using AWS services

Log Analytics (The "Observability" Use Case) using AWS servics  The Problem: You have 1,000 ECS...

architecture, aws, monitoring, serverless


💸 The "Zero-Bill" Cloud: Routing AWS Cost Alerts to Discord with Lambda and SNS

🚨 The Problem  Every cloud computing enthusiast shares the exact same fear: accidentally leaving a...


What happens when your migration agent dies at file 7 of 12

A migration agent spends real money and real minutes per run. It clones a repo, installs its deps,...


Day 3/30 AWS System Design Patterns

340 customers were charged twice. No one touched the code.  An e-commerce platform processes orders...

systemdesign aws distributedsystems serverless

systemdesign, aws, distributedsystems, serverless


Open Serverless v4 is here

We're long time users of Serverless Framework since v2. When v3 came out, we were able to quickly...


What Is Serverless Computing?

Cloud computing has transformed the way software applications are built and deployed....

serverless cloudcomputing webdev softwareengineering

serverless, cloudcomputing, webdev, softwareengineering


How the Repository Pattern Helped Us Migrate from REST to GraphQL Without Breaking Everything

The Challenge I Faced   In our recent project, we started with a traditional REST API...

cleancode cleanarchitucture react typescript

cleancode, cleanarchitucture, react, typescript


Understanding Monads in TypeScript: A Practical Guide

Monads in TypeScript are simpler than you think. You already use them — Promise and Array are monads. Learn the pattern, then apply it with Maybe, Either, Task, and TaskEither from @oofp/core.

typescript, functional, monads, javascript


Building AgentForge Studio: An Open-Source Visual AI Agent Workflow Builder

Hey devs! 👋  I just open-sourced AgentForge Studio — a visual, node-based builder for designing,...


Building Resilient Retry Logic in Node.js: Exponential Backoff, Jitter, and Circuit Breakers Done Right

Every Node.js developer has written this at some point:    async function fetchWithRetry(url, retries...


Indexing 6,000+ Map Points for an Extraction Game: Spatial Queries That Don't Stutter

Extraction shooters and PvPvE ARPGs put a strange burden on their community tooling. A normal wiki...


How I Built a Fast, Serverless Online Image Compressor Using TypeScript and Wasm

Hey DEV Community! 👋  I recently built an all-in-one image compression tool for WeLuvTools designed...

webdev, programming, typescript, showdev


How I implemented Pagefind search with a lazy-loading native dialog in Astro 5

Using the HTML dialog element and deferred script loading to add Cmd+K site search to three Astro directories without shipping Pagefind's JS bundle on every page view.


The Hidden Cost of Falsy States: Rethinking JavaScript Operators

If your UI occasionally renders a raw 0 to the DOM, your team has an operator problem.  Mastering...

javascript, typescript, webperf, frontend


My Pipeline Needed Three Different Models to Hand Off to Each Other Without Losing Validation Along the Way

The task was a moderation pipeline: classify an incoming report, draft a response if it needed one,...


Stripe Payments in Next.js 15 The Setup I Use for Every SaaS

Every SaaS project eventually needs the same thing, a way to charge people. Stripe handles the actual...


Building an AI Resume Builder with Next.js, Prisma, and LLMs

I built an AI-powered resume builder to explore how modern AI tools can improve resume creation while...


Building Reusable JavaScript Utilities That Scale

Every growing codebase eventually suffers from utility clutter. Functions like formatCurrency(),...

javascript typescript webdev programming

javascript, typescript, webdev, programming


Bidirectional Sync Between Radar Chart Vertex Dragging and Sliders

This guide explains an implementation pattern for editing SVG radar chart values via vertex dragging with real-time, bidirectional synchronization across eight sliders, focusing on coordinate transformation and pointer event handling.


Three lint rules that caught persistent boilerplate in 1500 AI-generated directory entries

How I built a humanization quality gate to detect stock phrases and duplicate sentences leaking through into a programmatic directory's generated content.


How to run a team of AI marketing agents from Slack

An open-source template for a multi-agent marketing team built on eve, with human approval on every irreversible action.


Building a TypeScript SDK for Secure Direct Uploads to AWS S3 and ImageKit

Introduction   Handling file uploads in web applications often involves a trade-off between...


Your AI Coding Agent Might Be Making Your Repository Less Secure (I Built a Tool to Check)

Your AI Coding Agent Might Be Making Your Repository Less Secure (I Built a Tool to...


How to Monitor Your tRPC API with Vigilmon   tRPC gives you end-to-end type safety between...


My Diagnosis Was Wrong: What Profiling a 60-Million-Row Leaderboard Actually Taught Me

An admin dashboard endpoint felt broken. It was a simple-looking ranking query — "show me the members...


Give Your Angular Modal a URL: Three Router-Based Approaches

Opening a modal is easy. Giving it a URL, and making that URL behave like a real part of the...


Your Cognito Login Code Fails Because the App Client Never Allowed That Auth Flow

Your login screen works locally. You point it at the staging user pool and every sign-in comes back...


Migrating an Expo app from Japanese to multi-language support in stages

This article is an English translation of the original Japanese article.  I migrated an Expo app from...


How to Audit AI Crawler Access with robots.txt and Server Logs

AI visibility work often starts with prompts, citations, and answer tracking. But there is a more...


Local RAG Over Audit Reports: Searching Five Years of Vulnerabilities Offline

Last month I was reviewing a vault contract and had that itch: I have seen this exact rounding bug...


Building a Production-Ready Logging SDK for Node.js: Lessons We Learned

Every Node.js application starts with logging.  At first, logging seems simple. Print a message, add...


Two Strings Per Entity: Killing Synonym Drift in a Content Codebase

An audit found one government agency written five different ways across six pages. The fix was a registry that permits exactly two strings per entity and a lint rule that fails the build on the rest.

architecture webdev typescript contentstrategy

architecture, webdev, typescript, contentstrategy


Building an LLM API Gateway in Node.js

A post by Mudassir Khan


Fixing an Infinite Loading State in the npmx Code Browser

This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry.          ...

devchallenge bugsmash opensource typescript

devchallenge, bugsmash, opensource, typescript


Cloudflare Cache Hit Rate: 7% to 90%

Cloudflare Pages Cache Hit Rate at 7%? I Brought It to 90% with 3 Rules    After deploying...


Qwen3 en local con Ollama: qué cambió en la arquitectura y si vale el cambio

Qwen3 llegó con thinking mode y mejoras reales en código. Pero antes de reemplazar el modelo que ya tenés corriendo en Ollama, hay preguntas técnicas que responder primero. Acá las respondo sin vender hype.

spanish espanol typescript inferencialocal

spanish, espanol, typescript, inferencialocal


Qwen3 locally with Ollama: what changed in the architecture and whether it's worth switching

Qwen3 landed with thinking mode and real improvements in code generation. But before you replace the model already running in your Ollama setup, there are technical questions you need to answer first. I answer them here without selling hype.

english typescript inferencialocal agentesia

english, typescript, inferencialocal, agentesia


Why CTE vs Subquery Matters More on Redshift Than Anywhere Else

On Snowflake or modern Postgres, CTE vs subquery barely matters for performance. On Redshift, it can...


The Retry Loop That's Tripling Your Bedrock Bill

Six green spans, one broken tool   A few weeks after shipping cost attribution, I was...


AWS Cost Optimization Playbook: 20 Strategies That Actually Save Money in Production

Industry data consistently shows 28-50% of cloud spend is avoidable. Not because teams are careless,...


AWS Daily Digest — August 03, 2026

☁ AWS Daily Digest · August 03, 2026 Auto-generated · Groq (Llama 3.3 70B) · Free &...


"Error: The module was compiled against a different Node.js version using NODE_MODULE_VERSION — fixing native addon failures after a Lambda upgrade"

A native addon (sharp, bcrypt, better-sqlite3, grpc) fails to load on Lambda after bumping the runtime to nodejs22.x. What NODE_MODULE_VERSION 127 means, why your Node 20 binary is now incompatible, and the right fix for each scenario.


What a Claude agent actually costs (and how to estimate yours)

Short answer  The per-token price is the same on the Anthropic API and AWS Bedrock — so the platform...


# Deploying a Production-Style Amazon EKS Cluster on Fargate with AWS Load Balancer Controller and the 2048 Sample Application

Introduction   This guide provides a detailed walkthrough of deploying a Kubernetes...


EKS Upgrades Stay Stable: Automated Lifecycles Meet LSE Layer 7 and CenTest

A Production Upgrade That Did Not Cascade  An enterprise platform team at a global financial services...


Como montei um kit Terraform hardened pra EKS (e por que separei um ebook de runbooks à parte)

Depois de subir EKS "do jeito certo" várias vezes em projetos diferentes — node groups Graviton, IRSA...


We scanned our own AWS account before selling audits. It found 3.4%.   We built an AWS cost...


5 New Dev Tools You Should Learn This Week

A roundup of the latest developer tools released in late July 2026, with details on what they are and why they matter.


Embedding AI Agents into a File Portal — From AgentCore MCP to Multi-Agent Teams (Part 3)

Letting AI agents search and read NAS files through Amazon Bedrock AgentCore over MCP, with a human approving anything destructive.


Feature Flags with AWS AppConfig: The Principle of Decoupling Deploy from Release

The problem in context   The pattern is familiar to anyone who has run an incident: a new...


AWS Elemental MediaConvert: The Video Service Every Developer Should Know

About this series   Most AWS learning stops after EC2, S3, IAM, and Lambda. But AWS has over...


Karpenter KEDA 31k saved 3 foot guns found

Pairing Karpenter with KEDA recovered $31,000 in infrastructure spend (ZopDev), but the integration introduced 3 distinct failure modes that nearly erased it


Iac drift vs config drift: which one burns you at 500 resources

At 500 managed resources, infrastructure drift stops being a maintenance nuisance and becomes a misdiagnosis engine that corrupts incident response at the root.


Building a Production-Grade Microservices Platform on AWS EKS

🎯 Introduction   Running microservices in development is easy. Building a production-grade...


Twelve AWS networking questions, and what the interviewer is actually listening for

I have asked some version of "walk me through why this EC2 instance can't reach the internet" in...


How I Cut AI Transcription Costs Below $0.10/Hour with AWS Spot Instances and Whisper Large-v3 Turbo

A deep dive into building a cost-optimized, self-hosted AI transcription pipeline on AWS - using Spot...


Using Amazon ElastiCache & Prompt Caching to reduce & optimize Amazon Bedrock invocation & Tokens: Part1

What is Amazon Bedrock?   as per the official documentation of AWS the definition of Amazon...


# Blog #9: I Gave My Minecraft Mod a Serverless Brain — And It Decides How Many Allies to Summon Based on How Screwed You Are

I Gave My Minecraft Mod a Serverless Brain — And It Decides How Many Allies to Summon Based...


Six Cross-Cloud A2A Paths, One Benchmark: How AWS, Azure, and GCP Agents Actually Work Together

Every directed edge between Bedrock AgentCore, Microsoft Foundry, and Google ADK, deployed and measured over A2A v1.0 — the numbers, the recurring failures, and what is still unmeasured.


Sole developer on a national SSO platform for six months, with Claude writing most of the code

Solution architect, 17 years in. From roughly March 2026 to July 2026 I was the only hands-on...


Reachable Doesn't Mean Exploitable. How to Tell the Difference From Configuration Alone.

Every scanner tells you what's misconfigured. None tells you whether the misconfiguration is exploitable, one change away from exploitable, or just noise. The difference is in the configuration graph. The relationships between resources, not the properties of individual resources. Stave classifies every finding into three tiers: exploitable, one-away, and reachable.


7 Hard Lessons From 50+ AWS Cloud Migrations

Every AWS migration starts with the same optimism: "We'll move everything in 6 weeks, save 40% on...


Three bugs we found and fixed in our own pipeline this week   Journeymen grades developer...

aws backend debugging softwareengineering

aws, backend, debugging, softwareengineering


Your First Penetration Test

Design reviews check documents. Code reviews check source code. A penetration test attacks a live,...


I Stopped My AI From Making Up AWS Answers With One Command

The Problem   AWS announces changes continuously, any reader here would be familiar with...


AWS Daily Digest — August 01, 2026

☁ AWS Daily Digest · August 01, 2026 Auto-generated · Groq (Llama 3.3 70B) · Free &...


Episode 4 — The Thing You Actually Deploy

Week 2. "My code passed tests. My dependencies are cached. So what actually gets deployed?"          ...

programming, productivity, cicd, beginners


My deploy check waits 60 seconds. My outage alarm waits 5. I measured neither.

Two numbers from my own systems, side by side.  When I deploy, a check confirms the pages are...

beginners discuss productivity community

beginners, discuss, productivity, community


Py_simple: a Python package that makes common tasks read like plain English

Just over a week ago I released a small Python package called py_simple, and it's grown a lot faster...


Out-of-Bag Error: The Free Exam You Didn't Know You Were Already Taking

The One-Line Summary: Because each tree in a Random Forest trains on a bootstrap sample, exactly    ...

machinelearning datascience python beginners

machinelearning, datascience, python, beginners


Java Thread - Introduction

# JAVA THREAD  If there is a Java file named **Main.java**,  ```text Main.java  →  javac  → ...


Understanding Entity Framework Core — Part 1: Foundations

When I started learning Entity Framework Core, I thought the hardest part would be memorizing its...


How to Install PyMuPDF in Google Colab (Beginner's Guide)

This tutorial shows you how to install PyMuPDF. After completing this tutorial, your environment will...


Estudar PHP: o problema não é falta de conteúdo, é falta de guia

Você decide aprender PHP. Abre o YouTube e encontra 40 vídeos. Um começa no "Olá, mundo", outro já...


npm's New 2FA Token Rules: What Beginner AI Builders Should Learn About Permissions in 2026

The most dangerous sentence in an AI-assisted project is not “the code failed.”  It is “the code...


HeyGen Video Podcast Guide: How to Use It, Best Prompts & Use Cases (2026)

Turn any document into a two-host video podcast in minutes. Full HeyGen Video Podcast guide: setup, prompts, use cases, and a monetization playbook.


I'm Launching Street-Smart Coding Manifesto: A Case Against Syntax Obsession (Book 2 of My Trilogy)

Crafting clean code alone won't save you or make you stand out. That's not the real edge.          ...


Building a Responsive Navbar with Tailwind CSS: My Frontend Practice Project

When I started learning frontend development, I discovered that the best way to improve my skills was...


Hi ! Joining Dev.to to see what happens here

A post by GuealDev


CSS Positioning

When we create a webpage, every element comes one below another by default. But sometimes we need to...


About 'CSS'

WHY so many types?   Because not every element is targeted in the same way. Sometimes you want to...


Hello DEV Community! 👋

Hi everyone! 👋  I'm Ujjal Hossain, a Front-End Engineer and Computer Science & Engineering...


Static vs Dynamic QR Code: What's the Difference and Which Do You Need?

Static QR codes are permanent. Dynamic QR codes let you change the destination after printing. This...

webdev, productivity, beginners, marketing


WebSocket: el protocolo que evita repetir el handshake HTTP en cada mensaje

Cómo el protocolo WebSocket abre una sola conexión TCP tras un handshake HTTP y la mantiene viva para chats y datos en tiempo real, con ejemplos en Ja

programming, tutorial, webdev, beginners


Loading Safetensors in C++

First, use open() to open the file and check the file size.    fd = open(path.c_str(),...


I Wasted 17 Dollars on Extra Fabric Because I Could Not Convert Yards to Centimeters in My Head

I Wasted 17 Dollars on Extra Fabric Because I Could Not Convert Yards to Centimeters in My...


What Happens If a Bank Transfer Fails Halfway? Understanding ACID Properties in SQL

Imagine transferring ₹1,000 from one bank account to another.  Let's say Jeni has ₹10,000 in his...


I Could Not Remember My Binary Logic Gates in a Coding Interview — So I Built a Visual Reference

I Could Not Remember My Binary Logic Gates in a Coding Interview — So I Built a Visual...

programming computerscience beginners tutorial

programming, computerscience, beginners, tutorial


GitHub Models Shut Down: What Beginners Should Learn About AI Vendor Lock-In

An AI feature can look permanent right up until the provider removes the sign from the...


How do you code with AI 2026?

Hi,  I'm an average beginner developer with about one year of experience, and I'm wondering how...


Okay Let me Switch to Unreal

Hello. No idea if anyone's going to read this, but writing it feels like I've done something, so here...


How to Choose Men's Shoes That Last: Comfort, Quality & Budget Tips

Buying shoes seems easy—until you realize your closet is full of pairs that looked great in the store...


I Could not Mentally Calculate Bitwise XOR in a Coding Interview — So I Built a Visual Calculator

I Could not Mentally Calculate Bitwise XOR in a Coding Interview — So I Built a Visual...

programming, javascript, webdev, beginners


I Built a Wiki for a Game Where the In-Game Menus Tell You Nothing   Point Blank Zero is a...


I Built a Free Receipt Generator Because Hotels Keep Losing Mine   Last month I needed a...

webdev javascript productivity beginners

webdev, javascript, productivity, beginners


Memory Leaks: You Freed It. It Didn't Leave

The work finished an hour ago. Nothing is running. And 113 MB just sits there.  Restarting...

java programming beginners computerscience

java, programming, beginners, computerscience


My first blog looking to post more bout' my journey here

I ported a Python library to Rust. My fuzzer was lying to me.                                  ...


Week 23:- Every Student Sees Learning Differently

This week reminded us of something we keep discovering through every student conversation  No two...


My first project in python

Spy – Network Scanner My first real project (now on its 3rd version). I built it to get better at...


Shipping Your Unity Game to iOS: The Technical Checklist Nobody Gives You Upfront

If you've built mobile games before, you already know that finishing your game is only step one....

unitygame gamechallenge beginners programming

unitygame, gamechallenge, beginners, programming


Welcome back to PHP

I left programming in PHP when isset() was a lifestyle, array() had just become [], and types lived...


Your Async Logs Are Lying to You: Correlation IDs with Contextvars

## The Three Logs That Never Connected


How to Process a Large CSV in Node Without Running Out of Memory

The code that processes a CSV in your tests looks reasonable. Read the file, parse the rows,...


Perfex CRM n8n Automation: 5 Practical Workflows You Can Build Today

Five practical n8n workflows for Perfex CRM with a free community node: lead capture, invoice follow-ups, Sheets exports, ticket routing, AI Agent tools.


Every Way to Export LinkedIn and Sales Navigator Data (and When Each One Actually Works)

A few months back I was running Sales Navigator searches for a client project — filtering down to "VP...

showdev productivity webscraping tutorial

showdev, productivity, webscraping, tutorial


Building an Uncertainty-Aware Practice-Exam Score Calculator in Java

A dependency-free Java example for weighted educational estimates without pretending one score is certain.


Agentes con Gemini en producción: lo que nadie te cuenta hasta que se te cae el servicio

Agentes con Gemini en producción: lo que nadie te cuenta hasta que se te cae el...


How to Run Qwen 3.8 Locally: The 2.4T Max Math, the Open Weight 27B, and What Runs Today

Alibaba made Qwen 3.8 Max generally available today (August 3): roughly 2.4 trillion parameters as a...


Godot 4 GPUParticles2D not showing? 5 reasons your particles aren't appearing

Your Godot 4 GPUParticles2D is in the scene but nothing shows up. Here are the 5 real causes — missing process material, culled visibility rect, one_shot traps, lifetime too short, and emitting left false — each with the exact fix.


Streaming Responses with Claude: A Complete Developer Guide


Shopify deleted products: the 404 redirect fix for clients

TL;DR   Shopify does not create a redirect when a product is deleted; the old URL starts returning...


Llamar a un teléfono real desde el navegador: WebRTC, SIP y lo que nadie te cuenta de la facturación

En corto   Conectar WebRTC con la red telefónica de verdad es engañosamente fácil de empezar...


PDF Tamper Detection API for C#: ASP.NET Core Integration Guide

Integrate the HTPBE PDF tamper detection API into ASP.NET Core: a typed HttpClient, System.Text.Json DTOs, polling with backoff, and a bank-statement…


Your SPF record can be valid, published, and completely ignored

There's a failure mode in SPF that produces no error anywhere you'd think to look.  Your record is...


دامافارم — Complete Guide

راهنمای جامع و فنی دامافارم (Damafarm)   دامافارم (Damafarm) فراتر از یک سامانه ساده؛ یک...

programming, tutorial, opensource, webdev


GitLab 2FA Lockout: How My Local SSH Key Saved the Day

I have two-factor authentication (2FA) enabled on most of my accounts using an authenticator app....


How to Build an Entity Consistency Ledger for AI Search

AI-search measurement can fail before a prompt is ever sampled.  If a company appears online under...


I Built a CLI Image Compressor — 73% Smaller in 0.1s

I just shipped compressfast — a command-line image compressor that runs entirely on your machine. No...


how to leARN KOTLIN

The best way to learn Kotlin is by writing code every day, not by watching hours of videos.  Here's a...


Your AI fortune teller was making things up — so we took the math away from the model

A few weeks ago I bookmarked a viral post: "5 fortune-telling Skills on GitHub you should save."...


Practical Uses for CSS :has() Now That It Works Everywhere

The parent selector exists now. Form field states, quantity queries, previous-sibling styling and page-level toggles, all in plain CSS with :has().


How to Build and Deploy an AI Agent on AWS with Bedrock, Strands, and AgentCore

A foundational look at building and deploying an AI agent on AWS, from a single model call to a...


Building Jugaad-Mustache: Porting Mustache.js to Safe, 30x Faster Rust 🦀   Dynamic...


How to Set Collection SLOs for AI Search Visibility Monitoring

AI-search visibility reports are only as trustworthy as the collection system behind them.  If a...


Normalisation des Nombres pour les Données Internationales : Guide Pratique

Vous exportez un tableau depuis un site allemand. La colonne revenus affiche « 1.234,56 € ».  Vous le...


These days that AI is affecting on our programming and software development skills, these kind of projects let us to refresh and recover some of our coding skills and obliges us to use more of the brain. I highly recommend these series of tutorials.

How to make an advanced TIC TAC TOE game with Javascript [part 1]                              ...


How to Remember Namespaces

Many people misuse the term "namespace." This is because they do not know what the word means.


Understanding Two-Phase Commit (2PC) by Building One in Go

Introduction   Imagine sending 100 from Alice to Bob.  If both accounts are in one database,...


Health Checks and Uptime Monitoring: API Polling, 429 Backoff, and Retry Patterns

If you just want the recommendation: build the uptime poller yourself, put exponential backoff with...


I Built a Language Where AI Calls Are Sandboxed by Default            The 30-line Python...


Building a Video Thumbnail Generator Service with Go and FFmpeg at Scale

How we built a Go service that wraps FFmpeg to generate consistent video thumbnails, with concurrenc


I built a zero-dependency Go CLI to package RPG Maker games

Releasing an RPG Maker game means a lot of manual, error-prone steps: check the   project, strip...


Using etcd to Coordinate Video Region Routers Across a GDPR Fleet

How we moved video region-routing policy into etcd: keyspace design, a Go watch loop, a PHP front do


Wails v3 Beta Released: Developers Needed for Testing and Feedback to Ensure Stability and Usability

Introduction   The release of Wails v3 Beta marks a pivotal moment in the evolution of Go...


LLM Narrative Engines, Part 5: Integration Testing and Behavior Freezing

The parser is written — but how do you ensure future changes don't break it? Golden file tests, validators, and sliding-window aging tests — freezing parsing behavior with tests.


"iota ใน Go — อักษรกรีกตัวจิ๋วที่กลายเป็นเครื่องมือทรงพลัง"

📅 เขียนเมื่อ: กรกฎาคม 2026 ⚠ ตรวจสอบข้อมูลจาก Go Specification, APL documentation,...


Deal-scoped PASETO: three things I got wrong about audience-bound tokens

MCP requires servers to reject tokens that were not issued for them. What audience-bound credentials cost to ship in Go, including the part I have not fixed.


Language-agnostic job orchestration with GFire — stop sharing fate with your workers

Repository: github.com/hrodrig/gfire   Release: v1.0.0   Site: gfire.net      Imagine a high-end...

go backgroundjobs opensource architecture

go, backgroundjobs, opensource, architecture


Tracing ORAG's Path from Document Ingestion to Hybrid Retrieval

Project Background   ORAG is a Go-native RAG service framework. Its repository describes an...


1M DB Updates, 3 Days, 200 Lines of Go: A Legacy Rescue Story

The Context   I wasn't part of the original team. I didn't know their codebase, their...


The Unbuffered Channels In Go Lesson I Think Has Finally Clicked for Me 🤷🏽♂

While struggling to understand channels in go, I would try out many things in my sandbox...


Beginner Go Programmer Seeks Guidance on Projects, Advanced Topics, and Learning Tips for Mastery

Introduction to Go Programming   Go, often referred to as Golang, is a statically typed,...


I built a BitTorrent engine that streams to Plex without downloading   Two years ago I got...


GoFr: The Opinionated Go Framework That Takes Observability Seriously

Why I Looked at GoFr   If you've built microservices in Go, you know the drill: pick a...


Why I Built Templates for Rails and Go (After 10 Years of Shipping Other People's Products)

Originally posted on my blog.  I'll get an idea for a side project, get excited, and start coding....


Correctness Has a Price: We Benchmarked Fair Leaderboards

We replaced Redis's arbitrary equal-score ordering with first-arrival wins, then measured the latency and memory bill instead of calling it free.


Stop Hand-Rolling HTTP Clients for Glassnode: Meet glassnode-go

Building with on-chain data is exciting right up until the integration work begins. A dashboard,...


Wetask Is Opening Its Task Runtime to External Workers

Wetask's next update brings durable, fenced external workers, atomic batch settlement, and...

go, distributed, architecture, opensource


Structuring Go Projects For Growth with Packages

Previously, we built a complete CRUD API for managing tasks.  Although everything works, our entire...


Implementing IP Reputation Scoring in a Go API

Your API logs show a flood of requests from a single IP — 400 attempts in 30 seconds. By the time...


Building an Aruba Central Producer in Go: Four API edge cases we had to solve

A deterministic infrastructure collector sounds straightforward: authenticate, call the API,...

networking, go, opensource, architecture


Connecting a Python Agent to a Go Agent: A Cross-Language A2A Tutorial

You have a Python agent doing data extraction and a Go agent handling real-time inference. They need...


Routing Asia-Pacific Video Traffic With etcd-Backed Region Config

How we replaced baked-in JSON region config with etcd for a multi-region video router: watch streams


Publishing APM@v11.0.0

APM v11.0.0 is finally live. This one took 4 months, and most of that time was spent undoing my own...


Wrapping Go errors: where, and mostly why

Wrap at every layer or once at the boundary? Even Dave Cheney changed his mind. The real criterion: the API contract %w creates with the caller.


Fal | I built a programming language with no symbols, and the hardest part was the word "and"

I'm Spanish, and I kept watching people around me try to learn programming and give up. Not because...


LLM Narrative Engines, Part 4: Parsing Rules and Interpolation

How do you parse condition-action expressions? How does the {variable} interpolation syntax work? This post covers the last two pieces of the parsing layer — turning rules from text into executable structures.


Stop Plumbing Crypto News APIs by Hand: Introducing cryptopanic-go

Building a crypto-facing product in Go can begin with a deceptively small task: fetch a news feed,...


I built kubectl-tripwire to find admission webhook problems before they break a cluster

One thing I've noticed while working with Kubernetes is that admission webhooks are easy to forget...


My database claimed crash-safety. `kill -9` proved nothing.

I have a small document database called grange. Its README said "crash-safe by construction", and...


Pilum: From Launch to Production-Ready in 3 Months

Github URL: https://github.com/SID-Technologies/Pilum  In December 2025, I open-sourced Pilum, a...


We Built a Pure Go 3D Renderer — Then Embedded It Inside a GUI Widget

g3d: Pure Go 3D rendering with scene graph, PBR materials, and forward renderer. Two integration patterns: fullscreen overlay (game HUD) and embedded GPU widget (CAD/IDE). Zero CGO, five GPU backends.


No, Go 1.26 Did Not Make Your Service 40% Faster

Everyone quotes the same number about Green Tea GC. Almost nobody quotes what it actually measures. Here's what changed in the Go 1.26 collector, and where the percentages really come from.


I Got Tired of Rewriting Segment Trees in Go... So I Published One

If you've solved enough competitive programming problems, you've probably written a segment tree more...


Why AI Coding Agents Need Work Attempts, Leases, and Checkpoints

We gave AI agents the ability to write code, run tests, open pull requests, and hand work to each...


I Wrote a Rust Image Compressor That Survives WeChat's Brutal Re-Compression

How WeChat/Instagram silently re-compress your photos, and a Rust + mozjpeg tool that fights back with 4:4:4 chroma, CAS sharpening, and a JSON interface for AI agents.

rust imageprocessing opensource performance

rust, imageprocessing, opensource, performance


From kernel to desktop: 68 apps, 238 files audited, and a working GUI How I turned a kernel that boots into a desktop you can actually use

I've been building IONA OS — a sovereign operating system written entirely in Rust — for the past 13...

programming rust software softwareengineering

programming, rust, software, softwareengineering


How We Made a C JSON Engine 299.88% Faster in Safe Rust (And What Broke Along the Way)

When task-driven AI coding assistants convert legacy C repositories to Rust today, they routinely get...

rust softwareengineering c hackathonraptors

rust, softwareengineering, c, hackathonraptors


langchain-rust: Build LLM apps with Ollama + local models in pure Rust — no Python needed

If you're running local models through Ollama and tired of Python's overhead, check out...


Porting Python Parsy to Rust: Lessons from Port Mortem 2026

Completed my submission for Port Mortem 2026 – Code Resurrection Hackathon!  Over the past few days,...

portmortem2026 rust parsercombinators opensource

portmortem2026, rust, parsercombinators, opensource


I ported a Python library to Rust. My fuzzer was lying to me.

Every "port to Rust" post is the same shape: I rewrote it in Rust and it's faster. This one isn't. I...

hackathonraptors, rust, python, opensource


Your Crate's MSRV Is Probably Wrong (And You Won't Know Until Someone's Build Breaks)

Here's a scenario that plays out constantly in Rust projects: your Cargo.toml declares rust-version =...


MCP Development Updates with Rust and Claude Code

Leveraging coding agents and the underlying LLM to build Model Context Protocol (MCP) AI applications...


[Advanced Rust] 2.3. API Design Principles of Unsurprising Pt.3 - Implementing serde Serialize and Deserialize Traits, and Why…

Full title: [Advanced Rust] 2.3. API Design Principles of Unsurprising Pt.3 - Implementing serde...


[Advanced Rust] 2.2. API Design Principles of Unsurprising Pt.2 - Implementing Clone, Default, PartialEq, PartialOrd, Hash, Eq…

Full title: [Advanced Rust] 2.2. API Design Principles of Unsurprising Pt.2 - Implementing Clone,...


You've Seen the Pipeline. Now Meet the Matrix: The One `Vec<f64>` Behind the 400 Shrink

How a single contiguous allocation — and a type system that won't let you feed strings to a scaler —...


How Losing My Typora License Led to Building My Own Markdown Editor             Introduction   For...


Traits in Rust

In Rust, a trait is a way to define shared behavior. It acts as a "contact" or "label" that you can...


Expanding the TeaQL Ecosystem: Seamless Integration with Axum Web and Redis Distributed Cache

As the core architecture of TeaQL continues to mature, we are excited to announce two heavy-weight...


Falco — a from-scratch browser engine in ~36k lines of Rust (v0.1.0 release)

Hi everyone! I just released v0.1.0 of Falco — a browser engine I've been building in Rust on nights...


Clive — a friendly CLI for local LLMs

Why I built Clive   For the last couple of weeks, as the cost of frontier models kept...


A 7.5B model beat a 24B on my coding benchmark.

16 local model configurations, 56 hidden-test coding tasks, 36 full runs, one 16 GB...


I'm 12 and I built my first CLI tool in Rust to solve "works on my machine"

Hi everyone! 👋  I'm 12 years old, and I've been learning programming for a while now. I'm currently...


[Advanced Rust] 2.1. API Design Principles of Unsurprising - Naming Tips, Implementing Common Traits

Full title: [Advanced Rust] 2.1. API Design Principles of Unsurprising - Naming Tips, Implementing...


Presentando Fitz LiveViews: UI en tiempo real en un solo lenguaje, sin build de JS

Un framework de UI en tiempo real, server-rendered, para el lenguaje Fitz — diffing por WebSocket, sin paso de build de JavaScript, inspirado en Phoenix LiveView, con un target opcional a client-WASM para que el mismo componente corra offline.


I Replaced My sklearn Pipeline With Pure Rust. The Docker Image Shrank 400x

How datarust gives you StandardScaler, OneHotEncoder, LogisticRegression, and JSON model persistence...


Refatorar para gastar menos tokens

Refatorar para gastar menos tokens   Quando agentes escrevem software em grande escala, a...

ai, programming, softwaredevelopment, rust


Exploring WebAssembly on the Server Beyond the Browser

After spending over seven years designing distributed enterprise backends using managed frameworks...


I Chased uWebSockets—and Found a 14-Byte Performance Cliff

Building ramjet-ws-js: a Rust-backed WebSocket path for Node.js that wins where it matters, admits...


The Return of E Expressions: Fluent Chaining and Structured Panics for AI Auto-Healing

In the evolution of TeaQL, we've constantly navigated the tension between developer ergonomics and...


The Enum That Panics: Surviving a Claude API You Didn't Compile Against

A new Claude content-block type shouldn't be able to crash your Rust service. Here's how a non-exhaustive wire format keeps deserialization from becom


[Advanced Rust] 1.17. Orphan Rules, Coherence, and Consistency - Blanket and Covered Implementations

1.17.1. Coherence   Coherence means that for a given type and method, there is only one...


[Advanced Rust] 1.16. Generic Traits - Generic (Type-Parameter) Traits and Associated-Type Traits

1.16.1. Two Ways to Make a Trait Generic   Traits can be generic in two ways:   Generic type...


I made an Integer-only AI complete XOR with 99.7% accuracy all from scratch

I made an Integer only AI using Rust with my Phone.  The current version v.1.0.0 is the best its ever...


What PostgreSQL migration made you nervous, furious, or surprised you in production?

I'm working on an open-source PostgreSQL migration analyzer called safe-migrate, and I've realized...

opensource, postgres, rust, productivity


cmdutils available to download via winget

Excited to share that cmdutils is now downloadable via winget! 🚀  cmdutils is a zero-bloat CLI tool...


Exploring WebAssembly on the Backend: A Cloud Architect's First Impressions

For years, my standard answer for packaging backend applications was straightforward: put everything...


LibreFang 2026.7.31 Released

LibreFang v2026.7.31 release notes — open-source Agent OS built in Rust


Kernel-Level Audit & Privacy: Building Resilient Audit Chains in the AI Coding Era

In the era of AI Coding, business code may be co-generated and modified by human developers, AI...


Tauri v2 auto-updates without maintaining latest.json

Tauri’s updater is deliberately simple: your app asks an endpoint whether a newer version exists,...


Exploring WebAssembly on the Server: Beyond the Browser Sandbox

For nearly a decade, my mental model for deploying enterprise software has revolved around...


56 Best Websites to Buy Verified OKX Accounts Secure ...

Looking to buy verified OKX accounts for instant transactions? ◈{{⭐⭐}}◈➤ Telegram:...


d-lmdb is now available as a Docker image: a 3-node cluster and failover demo

I’m happy to share d-lmdb-server and the corresponding Docker image: deventlab/d-lmdb. The code is...

rust opensource database distributedsystems

rust, opensource, database, distributedsystems


[Advanced Rust] 1.15. Trait Bounds - Compilation and Dispatch

1.15.1. Static Dispatch   What happens when we compile generic code?  The compiler copies...


I built a file format so AI answers cite an exact source sentence, or admit they don't know

RAG has a trust problem: a model answers fluently, cites nothing, and you can't tell fact from...


Top 36 Sites to Buy Verified Instagram Accounts in 2026

Buy Verified Instagram Accounts ◈{{⭐⭐}}◈➤ Telegram: @progmbofficial ◈{{⭐⭐}}◈➤ WhatsApp: +1 (920)...


I got tired of running Redis for one background job, so I built a SQLite job queue

Every side project I've shipped in the last few years has hit the same wall at roughly the same...


Node.js SMS OTP Login Without Webhooks: Polling, Retry, Resend, and Abuse Prevention

TL;DR   Short answer: a polling-based SMS provider is enough for a basic Node.js OTP login,...


Why let Looked 7 Slower Than var: Closure Contexts and GC Thresholds in V8

The first benchmark looked convincing: when creating a large number of closures, a loop using let was...


The Node.js API Awakens: Building Scalable Express APIs

The Quest Begins (The "Why")   Honestly, I remember staring at a tangled mess of route...


Mendapi 0.5.4: twelve fixes to the first minute of a CLI

A release with no new features. Twelve small things that were wrong about the first minute of using the CLI, and one bug that hid behind a passing exit code.


How to Monitor Your Medusa.js Headless Commerce Backend with Vigilmon

Medusa.js is an open-source headless commerce platform built on Node.js. When your Medusa backend...


Idempotent Webhook Consumers for Strapi: Handling At-Least-Once Delivery Without a Message Queue

The webhook fires twice, and nobody notices until the invoice is wrong   Strapi ships...


Best Simple Hosted API for a Node.js App Health Dashboard Without Prometheus

If you just want the recommendation: for a small startup building a basic hosted app health...


Node.js Backend Proxy for OpenAI, Claude, and Gemini: Model Mapping and Retries

Use a backend proxy with app-level model aliases when one product needs OpenAI, Claude, and Gemini...


Stay ahead in web development: latest news, tools, and insights #148

weeklyfoo #148 is here: your weekly digest of all webdev news you need to know! This time you'll find 36 valuable links in 5 categories! Enjoy!


Supabase Evals: How AI Coding Agents Build Better Apps

I saw this announcement from Supabase about "Supabase Evals," and as someone who's spent years...


Severity belongs to (check, kind), not to the check: fixing 512 false "will not load" verdicts

I run an index that scrapes published Claude Code artifacts — skills, subagents, plugins,...


Python FastAPI and Node.js Error Tracking: A Common Schema for Microservices

Short answer: For a small Python FastAPI and Node.js microservices stack, standardize one error event...

python, node, observability, microservices


Node.js RAG PDF Uploads: Semantic Search, pgvector, Chunking, and Citations

For a small ask-your-docs product, I would start with PDF/text chunking, embeddings plus source...


WebMask: 43+ OWASP-aligned website checks with a React UI   I wanted a vulnerability scanner...


NestJS Complete Guide: Enterprise Node.js APIs (2026)

NestJS is the most downloaded TypeScript backend framework on npm. Where Express gives you routing...


Simple Feature Flags API for Percentage Rollouts and User Targeting in Express

Short answer: Use a basic server-side feature flags API for an Express service when you need...


One Key, Three Vendors: Calling OpenAI, Claude and Gemini From a Node.js Express Backend

Use one OpenAI-compatible chat endpoint and keep the model name in config — that's the shortest path...


🚀 Day 12 of My Node.js Learning Journey: Mastering Streams & Backpressure 📂⚡

One of the biggest strengths of Node.js is its ability to process large amounts of data efficiently....


Semantic Search Embeddings vs Keyword Search for a SaaS Help Center

Bottom line: for a beginner ask-your-docs feature in a SaaS help center, I would start with...


Node.js Runs TypeScript Now: Field Notes on Native Type Stripping

Headline: Node.js executes TypeScript files directly — node script.ts works with no loader, no...


How I Built a Durable Cloud Cell AI Agent: $0 Idle Costs

Slash AI agent costs to $0 idle and guarantee persistence. Learn how a durable cloud cell AI agent architecture beats traditional setups, with Node.js.

aiagents cloudarchitecture costoptimization node

aiagents, cloudarchitecture, costoptimization, node


The one design-review question that would have caught our APIM naming collision

"Property with the same name already exist." That's the whole error. No stack trace worth reading, no...


A Simple Feature Flag Kill Switch API for Node.js Production Incident Rollback

If you just want the recommendation: Short answer: use a dedicated feature flag as a production kill...


Choosing a Text-to-Image API for a Node.js Web App: DX, Docs, and Responses

Short answer: Choose the text-to-image API with the shortest boring path from prompt to usable...


Building WikiForms: An Open-Source Tool for Wikimedia Projects

Hi everyone! 👋  I'm excited to share a project I've been working on recently called WikiForms.   It’s...


Prompt Injection Defenses for LLM Gateways

Practical code strategies to protect your application from system prompt overrides and malicious injection.


I Tried Nub, the New Node.js Toolkit That Wants to Replace npm, npx, tsx, and More

Nub is one of the newest tools in the Node.js ecosystem, and it has a bold goal.  Instead of...


Uploading and Storing Multipart/Form-Data Using Multer and Cloudinary

Introduction   When a beginner developer first works with APIs, they tend to focus only on...


🚀 SuriLens: An Open-Source Real-Time Backend Execution Visualizer for Node.js

Backend debugging often relies on scattered console.log() statements, browser network tabs, and...


What a Portal's Resize Pipeline Actually Does to a Real Estate Listing Photo

Chroma subsampling, resampling kernels and colour-profile handling are where a resize-and-recompress pipeline quietly degrades a photo — the documented sharp/libvips defaults, not folklore.


One unchecked filename let a popular npm document converter write to any path on disk (CVE-2026-54732)

TL;DR     libreoffice-convert, a widely used npm wrapper around LibreOffice, built the...


🚀 Day 11 of My Node.js Learning Journey: Understanding Events & EventEmitter

One of the biggest reasons Node.js is so powerful is its event-driven architecture. Today, I learned...

webdev node javascriptlibraries programming

webdev, node, javascriptlibraries, programming


Run Simple Web Server On The Spot

PHP php -S localhost:8000  PHP (public)    php -S localhost:8000 -t public  Python  python3 -m...


Next.js July 2026 Security Release: What Developers Need to Know

I saw the announcement this morning about the Next.js July 2026 Security Release, and honestly, these...


You Don't Need a CSS Framework in 2026 — the Platform Caught Up

Here's the take: if you're reaching for a CSS framework in 2026 out of habit rather than a specific,...


Tailwind CSS

Tailwind CSS is a utility-first CSS framework that lets you build custom user interfaces directly in...


Repaint vs Reflow: A Simple Explanation

What's happening when a website loads?   When you visit a website, your browser reads the...


SPACESHOP

Liquid syntax error: Unknown tag 'endraw'


Designing Dynamic Learning Dashboards with React and Tailwind CSS

Dashboards serve as the central hub of any modern Educational Technology (EdTech) application. They...


Bootstrap

*What is Bootstrap? * Bootstrap is a free, open-source CSS framework that helps developers build...


FLEXBOX

What is Flexbox?   Flexbox (Flexible Box Layout) is a one-dimensional layout model designed...


Grid Layout

Grid    The Grid Layout Module offers a grid-based layout system, with rows and columns. The...


5 Common CSS Mistakes Beginners Make and How to Fix Them

Learning CSS can feel like magic, but it can also be incredibly frustrating. One minute your website...


Responsive web design

Responsive Web Design is an approach to web development that makes a website automatically adapt its...


Building Fluentic Style: Making CSS Debugging Work Across Next.js Server and Client

This is part of my Building Fluentic Style series, where I’m writing down the design decisions,...


“Save” and “Update” Are Not the Same — How a Former Okonomiyaki Chef Removed Confusing UI from a Flask App

A former okonomiyaki chef reviews a Flask bakery sales app from a store manager’s perspective and improves wording, navigation, input states, colors, and CSS structure.


Browser Rendering Optimization [KR]

요약    60fps 를 유지하려면 한 프레임을 16.6ms 안에 그려야 하는데, 브라우저 자체 오버헤드를 빼면 개발자가 확보해야 하는 실질적인 예산은 약 10ms...


Browser Rendering Optimization

TL;DR    To hold 60fps, a frame has to be produced within 16.6ms. Once you subtract the...


The Real Size of 1px in CSS [KR]

1px 은 디스플레이의 점 하나 크기라고 인식하는 경우가 있다. 그렇다면 같은 해상도와 같은 크기의 스크린이라면 동일한 사이즈로 보여야하는데 그렇지 않다. 그리고 1px 보다 작은...


The Real Size of 1px in CSS

1px is often assumed to be the size of a single dot on a display. If that were true, the same...


The lh unit sizes to the line, not the font

Ahmad Shadeed's post on ishadeed.com tours the CSS lh unit, which resolves to the element's computed line-height. Here's where sizing against that line beats sizing against font-size.


Jollof, Sunday Special — A Bowl of Jollof Rice in Pure CSS

This is a submission for Frontend Challenge - Comfort Food Edition, CSS Art.           Jollof rice....


Bootstrap 5.3 Features Every Developer Should Know — What Actually Changed

I've been building with Bootstrap since version 3. Watched it go from a 12-column float-based grid to...


CSS-Only Interactivity: Advanced Selector Patterns for State-Driven UI Animations

Master complex, state-driven UI animations using only CSS. Learn :has(), :is(), :where(), and pseudo-element stacking to build interactive components without JavaScript.


How I Built a 170-Page Game Database with Vanilla HTML, CSS, and Structured Data

How I Built a 170-Page Wuthering Waves Database with Vanilla HTML, CSS, and Structured...


The CSS infinity keyword, and what it lets you delete

A tour through Adam Argyle's recipes for the CSS infinity keyword — pill radii, unbounded clamps, and a boolean pattern the cascade can decide on its own.


Bootstrap

Think of it as a UI blueprint kit, instead of styling every pixel and layout rule manually in raw...


Build a Spanish WhatsApp booking landing page with plain HTML, CSS, and JavaScript

Many independent service businesses already use WhatsApp to confirm appointments. The missing piece...


Building Fluentic Style: Making Generated CSS Debuggable Again


Building Fluentic Style: Behind the Tailwind Presets


Use Fylgja CSS Without Installing Anything

Fylgja CSS v2.2 is out, and it ships a CLI that lets you grab the most useful Fylgja CSS files...


Responsive Design With Bootstrap 5: Tips That Actually Make a Difference

Bootstrap 5's responsive system is more capable than most developers use. Everyone knows col-md-6....


Component c68: Toggle Switch

A toggle switch is an iOS-style binary controller where a thumb slides left/right on a track. Unlike...


Component c65: Skeleton Screen

A skeleton screen uses gray blocks to mimic the layout of upcoming content (avatars, titles,...


Component c67: Step Indicator

A step indicator uses numbered circles and connecting lines to show progress in multi-step flows...


Building A Personal Metrics Dashboard With Vanilla JS And CSS Grid

Why I Wanted A Stupidly Simple Dashboard  I like metrics. Steps, sleep, HRV, code sessions, pitches...


Route and navigation matching, proposed for CSS

Bramus Van Damme, Noam Rosenthal and David Baron are drafting a CSS spec — css-navigation-1 — that describes URL routes and per-navigation styling in stylesheets, so multi-page View Transitions can drop the pageswap/pagereveal JavaScript.

css viewtransitions navigation cssworkinggroup

css, viewtransitions, navigation, cssworkinggroup


Tailwind vs FrontAlign: Which Is Better Depends on Your Architecture

If you've built anything on the frontend in the last five years, you've almost certainly touched...


Implementing a Classic N64 Face Engine in 3D CSS Without WebGL Using PolyCSS for Rendering and Interaction

Introduction   Imagine recreating the iconic N64 face engine, complete with lighting,...


Ouma, Nonna & Teta — one table, three kitchens

This is a submission for the Frontend Challenge: Comfort Food Edition, Perfect Landing prompt.       ...


Designing Ultra-Modern Glassmorphism UI Systems in Vanilla CSS   Creating ambient glowing...


Safari Technology Preview 249 drops attr(), if(), @function, popover=hint and Temporal in one build

WebKit's July 29 preview stacks nine CSS additions, a new HTML popover value, the dialog closedby attribute, and the JavaScript Temporal object into a single release — one of the feature-densest STP drops of the year for hand-authored HTML and CSS.


Bootstrap :)

What Is Bootstrap?  Bootstrap is a free and open-source CSS framework developed to make web...


CSS Flexbox vs Grid

1.CSS Flexbox    Flexbox was created to distribute space and align items within a container, even...


Taste of Punjab - A CSS Love Letter to Comfort Food

Taste of Punjab   A landing page built entirely with hand-crafted CSS art — no images, no...

frontendchallenge, webdev, css, javascript


Hard color stops turn conic-gradient() into a triangle machine

Chris Coyier makes the case that conic-gradient() with two hard color stops is the fastest way to draw a triangle in CSS. The from and at keywords do most of the work.

css, conicgradient, gradients, backgrounds


🚀 Beyond pip install: The Invisible Memory Leak Destroying AI Microservices

There is a specific kind of developer pain that only happens at 2:00 AM.  Your code compiles. Your...

ai architecture softwareengineering devops

ai, architecture, softwareengineering, devops


The DingTalk & Feishu AI Ecosystem: Guide Integration in

DingTalk and Feishu have evolved far beyond messaging apps. In 2026, they function as the central...


Optimize an AI agent to sound human, judged by an AI detector

Hand-tuning prompts for a subjective quality like tone does not scale. Use LaunchDarkly agent optimization to explore candidate prompts for a reply-drafting agent against GPTZero, an AI detector wired in as an inverted judge, then run a fuller eval on the candidates it surfaces. The run streams to the optimization Results tab and commits the winner as a variation.


I built a shared wall that can't be spammed, by removing the text box

Why the Positivity Wall has no text field, no accounts and no likes — and what subtraction has to do...


React Concurrent Rendering: Scheduling, Interruptions, and Debugging Suspense Boundaries

I finally understood why my React Suspense boundaries sometimes flicker unpredictably and how React’s concurrent scheduler manages update priorities and interruptions behind the scenes. This deep dive explains React’s concurrent rendering model, how it breaks and resumes work, and practical debugging tips for Suspense boundaries in production.

react, concurrentmode, scheduler, suspense


What if students could edit a real React app before they can even write one?

Most React courses teach in the same order. Syntax first. Then hooks. Then a small app. Then,...


How a Reading Problem Turned Into a Listening App

For the past few months, I've been working on a listening app, and I'd like to take you along for the...


TanStack Query Advanced Patterns: Optimistic Updates & Cache Management

Master production-grade TanStack Query patterns for optimistic updates, cache invalidation, and real-time sync in React apps.


React Mastery Series – Day 24: React Forms – Controlled Components, Validation & React Hook Form

Welcome back to the React Mastery Series!  In the previous article, we learned how React applications...


React Mastery Series – Day 23: API Integration in React – Fetch, Axios, Error Handling & Best Practices

Welcome back to the React Mastery Series!  In the previous article, we explored Redux Toolkit and...


React Mastery Series – Day 22: State Management with Redux Toolkit – Building Enterprise React Applications

Welcome back to the React Mastery Series!  In the previous article, we explored TypeScript with React...


How to add UI for your RAG?!?

Just built some FastAPI SSE backend streaming LLM responses token-by-token, after i got some free...


When AI Moves the Button: Build a Support Loop for Adaptive UIs

A practical React and TypeScript workflow for constraining AI-generated interfaces, attaching feedback to exact UI revisions, and giving support a reliable rollback path.


Progressive UI: Streaming & Suspense in Next.js ⚡

The All-or-Nothing Bottleneck of SSR  For years, Server-Side Rendering (SSR) was the gold standard...


useReducer Hook in React

The useReducer hook is a state management hook in React that provides an alternative to the useState...


React Mastery Series – Day 20: Building Production-Ready React Applications – Project Structure and Architecture

Welcome back to the React Mastery Series!  In the previous article, we explored React Router and...


The Next.js + React stack explained: what each layer does and when it's wrong

A practical guide to the Next React stack — React, Next.js, hosting, CMS, and styling — what each layer does, why this combination won, and when to walk away.


Deploying fully static Next.js websites on Vercel

Static site generation has a branding problem. Say "static site" and people picture a blog with...


React Mastery Series – Day 21: TypeScript with React – Building Type-Safe Applications

Welcome back to the React Mastery Series!  In the previous article, we explored Production-Ready...


Cómo solucionar \"Text content does not match server-rendered HTML\" en Next.js App Router

Cómo solucionar "Text content does not match server-rendered HTML" en Next.js App...


React Mastery Series – Day 19: Routing in React – Building Single Page Applications with React Router

Welcome back to the React Mastery Series!  In the previous article, we explored Custom Hooks in React...


React Mastery Series – Day 17: Advanced State Management – Mastering useReducer

Welcome back to the React Mastery Series!  In the previous article, we explored the Context API and...


This is How I Prevented XSS in React

There's a comforting myth that goes around React teams: "React escapes everything, so we don't have...

react, cybersecurity, security, learning


Learning

Today I started learning React.  My goal is to build real projects, understand how React works, and...


Misusing React Context, Then Blaming React Context

I've come across quite a few LinkedIn posts criticizing React Context.  Some of them make a claim...


Next.js Build Output Symbols Explained: , , ƒ and

TL;DR: Next.js 16 prints four symbols in its build output — ○ Static, ● SSG, ƒ Dynamic, and ◐ Partial...


React Mastery Series – Day 16: State Management in React – Understanding Context API

Welcome back to the React Mastery Series!  In the previous article, we explored React.memo and...


React Mastery Series – Day 15: React Performance Optimization – Understanding useCallback and React.memo

Welcome back to the React Mastery Series!  In the previous article, we explored useRef and useMemo...


Setup Husky, EsLint and Prettier in React + Vite Projects

Whether you're a senior developer or just starting out, writing clean, consistent code isn't optional...


How to Use SVG Icons in React, Next.js, and Tailwind CSS

There are exactly three sensible ways to get an SVG icon into a React codebase: paste it inline as a...


React Mastery Series – Day 14: React Hooks Deep Dive – Understanding useRef and useMemo

Welcome back to the React Mastery Series!  In the previous article, we explored useEffect Hook and...


My React Journey Begins Before Writing Code

*When I decided to learn React, I thought I already knew where to start. * My initial roadmap looked...

typescript, frontend, react, productivity


PHASE 4 — The Face

Scaffold a React app, log in through a real form, and do full CRUD without ever opening /docs again —...


React Mastery Series – Day 6: Props in React – Passing Data Between Components

Welcome back to the React Mastery Series!  So far, we've learned:   What React is Why React was...


React Mastery Series – Day 8: Understanding React Rendering & Component Lifecycle

Welcome back to the React Mastery Series!  In the previous article, we learned about State in React...


React Mastery Series – Day 13: React Hooks Deep Dive – Understanding useEffect

Welcome back to the React Mastery Series!  In the previous article, we explored Forms in React and...


How I handle 80,000+ data records without a Database in my Next.js Game

As a developer and a huge football fan, I wanted to build a daily puzzle hub. I created Futbolle — a...


An editable range can change without changing Word text

DCAB 0.9 adds a reproducible editable-range editor-assignment change case for static WordprocessingML review.

python, opensource, devtools, productivity


Refactoring OpenTelemetry Metrics: from God Class to Per-Subsystem Modules

What a metrics-architecture refactor taught me about singletons, mixins, cardinality, and why a metric name is a public API.

opentelemetry python refactoring observability

opentelemetry, python, refactoring, observability


DeepSeek V4 Flash Turned 45 Files Into 0 Bytes, Then Apologized

An agent finished the actual task correctly, then "fixed" a bug that didn't exist and zeroed out 45 files with a bit-shift error nine orders of magnitude off.


Google kills the Custom Search JSON API on 2027-01-01. Here is a self-hosted drop-in.

Google's Custom Search JSON API is closed to new customers, and existing customers have until January...


Building a Multi-Agent AI for Company LinkedIn Pages - Part 7: Building the Hook Agent

Our system can now classify a topic, conduct research, back it with examples, identify weak...


I spent months training a 730M model with no tool that could tell me it was already dead

A deterministic linter for ML training runs — no model judging your model. It caught a real failure in my own 125,000-step fine-tune, and a false positive in itself.

machinelearning, python, opensource, mlops


I built an insider-conviction screener for my watchlist in ~40 lines of Python (SEC Form 4)

Corporate insiders — CEOs, CFOs, directors — have to report every time they buy or sell their own...


Mem0 Auto-Resolves Memory Conflicts For You — Until It Silently Deletes One You Still Need

Mem0 markets its add() call as "just talk to it, it figures out memory." Mostly true — under the...


Making my first ever game with pyagame-ce!

I'm building my first ever game, Echoes of Ember! It is a small pixel-art platformer made with Python...


PaliGemma Isn't a Chatbot. It's Your Next Fine-Tuning Base for Vision.

Google's PaliGemma models are powerful, open vision-language components. But they aren't for chat; they're designed for transfer learning. Here's how to use them correctly.


How I gave a self-hosted AI agent long-term memory, without a vector database

TL;DR: I added long-term memory to a self-hosted AI agent. The memory lives on the user's own server...


Building a Search Engine for 4 Languages, 2 Alphabets, and 107 Messy Color Names (Elasticsearch + pgvector + CIEDE2000)

Real production queries from my fashion marketplace in Azerbaijan:    гара йупка      # "black skirt"...


Stop Waiting for the Full AI Response: Stream Tokens in Python

Most AI applications wait for the model to generate the complete answer before showing anything to...


I spent two days rebuilding my open-source Windows screen translator — Click'n'Translate 1.5

I built Click'n'Translate because I wanted translation to feel like a native Windows shortcut, not a...

opensource python productivity programming

opensource, python, productivity, programming


My Publish Script Has a Retry Instruction in Its Own Task Prompt. It Had No Guard Against That Retry Creating a Duplicate.

I run a scheduled task twice a day that writes and publishes articles to DEV.to from a small MCP...


Bucket Sort Algorithm

Bucket sort is a comparison-based sorting algorithm. A bucket sort is helpful when the input array is...


🚀 I Built a Full Image Processing Suite Instead of Another "Image Converter"

Most image tools do one thing.  Convert images. Compress images. Resize images. Crop images.  I...

programming, webdev, productivity, python


Building Airbyte Connectors That Survive Flaky APIs: Cursor Checkpointing for Resilient Incremental Sync

Most Airbyte custom-connector tutorials assume the happy path: the upstream API always responds,...


This week in Form D filings: $427M+ across 3 raises, pulled with a Python one-liner

Three SEC Form D filings crossed my scored feed this week: Sila Nanotechnologies ($309.6M), Core...


A legacy shape link can change without changing Word text   A Word document can carry a...


I Built a CLI That Interviews Me on My Own Code

When I started preparing for technical interviews, I noticed something strange.  I remembered DSA...


A task pane can be enabled without changing Word text   A Word document can carry Office...


A trailing-baseline bug that only shows up at the extremes: too much data, and too little

Built a small tool recently to flag which complaints are spiking in an app's recent reviews versus...


Google Scholar API for Bulk Paper Search: $1.50 per 1,000 Papers (2026)

A Google Scholar API for bulk paper search: titles, authors, years, citation counts, and PDF links as JSON from $1.50 per 1,000.


A document variable can change without changing Word text

DCAB 0.8 adds a reproducible persisted document-variable value-change case for static WordprocessingML review.


A DDE source can change without changing Word text

DCAB 0.7 adds a reproducible DDE field source-file change case for static WordprocessingML review.


One API key across OpenAI, Claude and Gemini: how to compare token cost per model

Bottom line: if you want one API key across OpenAI, Claude and Gemini and you're choosing mainly on...


Skillware 0.4.8 — Offline Prompt Injection Firewall for Any Agent

Your agent just ingested a scraped page, a pasted email, a PDF export, a GitHub comment thread — and...


34 Secure Robinhood Chain to Solana Transfer Services Reviewed

Visit Now • Instant Support • Trusted Platform CrossDEX.space is one of the best options for users...

ai, programming, productivity, javascript


Building a Client-Side Text Analyzer: How I Designed ReadMetric to Solve the Readability Problem

As a developer who also writes, I’ve often found myself staring at a draft, wondering: Is this too...

webdev, writing, productivity, javascript


I built a free text case converter — camelCase, snake_case, kebab-case and 8 more

As a developer, I constantly find myself needing to convert  variable names between different case...

webdev javascript productivity opensource

webdev, javascript, productivity, opensource


52 Ways to Transfer Robinhood Chain to Solana With Better Routing Quotes

Visit Now • Instant Support • Trusted Platform CrossDEX.space is one of the best options for...


Optimized for mobile | Moksha

📱 Devlog #6 — Mobile Performance Pass + Critical Bug Fixes    "योगः कर्मसु कौशलम्" Yoga is...


Building a Browser-Based Keyboard Tester: Ghosting, NKRO, and the Quirks of the KeyboardEvent API

I built KeyboardTest.tech — a free, no-install keyboard diagnostic tool that runs entirely in the...

javascript webdev nextjs cloudflarechallenge

javascript, webdev, nextjs, cloudflarechallenge


How a 60-Day Sliding Window Flooded Our Slack with 500 Duplicate Alerts

Our dev.to crosspost script had two time windows that were supposed to align. A publishAfter bypass broke the invariant and turned every CI run into a Slack spam cannon.

javascript, debugging, automation, webdev


Validar números de teléfono en JavaScript: por qué tu expresión regular está mal

En corto   Si en tu proyecto hay una expresión regular validando teléfonos, está mal. No...

javascript, spanish, webdev, programming


React Native i18n in 2026: A Practical Expo Router Playbook

The modern React Native localization stack, react-i18next and expo-localization wired into Expo Router, plus the RTL and plural gotchas.


Your Truncated Embedding Vector Is Silently the Wrong Length — Here's the One-Line Fix

Your Truncated Embedding Vector Is Silently the Wrong Length — Here's the One-Line...


Your UI is freezing because you never gave the browser a break

Every frontend developer has shipped it: a button that doesn't respond, a list that stutters during a...

javascript, webdev, performance, frontend


1,000+ Registrations in Just 4 Days: A Milestone That Belongs to the Community   When we...


My A/B test wasn't broken. My counter was.

I ran a 50/50 homepage split for a couple of weeks. The arm counts came back 178 to 57.  That is not...

analytics, webdev, debugging, javascript


Speed counter

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